Trying I've finished several guitars and ran into an issue with a new one I'm working on. Note the only difference is in the past I've used Behlen/Mohawk Classical Instrument Lacquer and this time I used Mohawks "Finisher's Choice Clear Lacquer"
Here are the steps I always use:
Grain fill with Aqua Coat
Let dry 24 hours, sand, repeat as necessary
2 coats Mohawk Vinyl Sealer
24 hour dry, sand
Color coat - used StewMac's black in aerosol because I don't like pigmenting black myself
Waited a few hours and laid down a few coats of the "Finishers Choice Gloss Lacquer"
Here is where it goes bad. Went out of town for a week for work. Came back and was going to do some more top coats. The finish was hard after a week, so I wiped it down with Naphtha to get the dust off and any oils from handling. Have done this dozens of time on previous builds. A few moments after the naphtha hit it, the finish got instantly gummy/sticky.
I've waited several days and went to sand it all off to start fresh, and it's still gummy. Won't hardly even sand it's so bad.
What happened? The naphtha I use is Klean Strip brand VM&P Naphtha.
Here are the steps I always use:
Grain fill with Aqua Coat
Let dry 24 hours, sand, repeat as necessary
2 coats Mohawk Vinyl Sealer
24 hour dry, sand
Color coat - used StewMac's black in aerosol because I don't like pigmenting black myself
Waited a few hours and laid down a few coats of the "Finishers Choice Gloss Lacquer"
Here is where it goes bad. Went out of town for a week for work. Came back and was going to do some more top coats. The finish was hard after a week, so I wiped it down with Naphtha to get the dust off and any oils from handling. Have done this dozens of time on previous builds. A few moments after the naphtha hit it, the finish got instantly gummy/sticky.
I've waited several days and went to sand it all off to start fresh, and it's still gummy. Won't hardly even sand it's so bad.
What happened? The naphtha I use is Klean Strip brand VM&P Naphtha.